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Unable to update the EntitySet because it has a DefiningQuery and no element exists in the element to support the current operation.

I was getting this strange error when I tried update/insert/delete on a new table which I had added to the project. Unable to update the EntitySet because it has a DefiningQuery and no <Insert Function> element exists in the <ModificationFunctionMapping> element to support the current operation. Solution¬†? Make sure that your table has a primary […]